The Nature of Liquids Flashcard

vaporization
the conversion of liquid to a gas or a vapor
evaporation
vaporization that occurs at the surface of a liquid that is not boiling
vapor pressure
a measure of the force exerted by a gas above a liquid in a sealed container; a dynamic equilibrium exists between the vapor and the liquid
vapor
describes the gaseous state of a substance that is generally a liquid or solid at room temperature
boiling point
the temperature at which the vapor pressure of a liquid is just equal to the external pressure on the liquid
normal boiling point
the boiling point of a liquid at a pressure of 101.3 kPa or 1 atm
what determines the physical properties of liquids?
disruptive motions of particles and attractions among particles
why do liquids have a definite volume?
the attraction between particles in liquids
liquid particles are much closer together so…
liquids are more dense than gases
do most water particles have enough kinetic energy to become gas?
no
what does heat do to liquids
increases the kinetic energy of particles and some are able to escape the surface
liquids evaporate into…
vapor/ gas
gas/ vapors condense into…
liquids
what is the equilibrium between of a liquid contained at a constant pressure
(evaporation)vapor and (condensed)liquid
what rises when the temperature of a contained liquid rises?
vapor pressure
vapor pressure indicates…
how volatile (or how easy it evaporates) a liquid is
what is vapor pressure measured with?
a manometer
what happens when the kinetic energy of liquid molecules heat up enough to vaporize?
the liquid boils
what effects the boiling point of a liquid?
altitude( atmospheric pressure)
does vapor have less stored energy than liquid?
no, it has more (so vapor burns are more severe than liquid burns)

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